Preheat oven to 350 degrees.
Place sweet potatoes, maple syrup and 1 teaspoon cinnamon in a food processor and mix until smooth. Set aside.
In a medium bowl, mix oats, nuts, flour and 1/2 teaspoon cinnamon. Set aside.
Mix maple syrup, oil, and water separately and add to dry. Mix. Divide dough in half.
Oil an 8x8 baking dish and press half of dough in the bottom. Spread the sweet potato mixture over the dough evenly.
Crumble the remaining half of dough evenly over the sweet potato. Press gently.
Bake for 20 minutes, until slightly crisp on top and
golden.
Let cool before serving.